AMPC  Vol.2 No.4 , December 2012
Preparation, Characterization and Thermal Expansion of Pr Co-Dopant in Samarium Doped Ceria
ABSTRACT

The compositions Ce0.8-xSm0.2O2-δ(X=0, 0.02, 0.04, 0.06) were prepared through the sol–gel route. The effect of Pr addition on the crystal structure, densification and thermal expansion of Ce0.8Sm0.2O2-δ was studied. The phase identification and morphology was studied by X-ray diffraction (XRD) and scanning electron microscopy (SEM). X-ray diffraction analysis showed that all the samples exhibit a fluorite structure. The lattice parameters  were determined by X-ray powder diffraction. Lattice parameters and volume of the unit cell increases with Pr doping. Density of the all samples is more than 90% of theoretical density. The thermal expansion was measured using dilatometric technique in the temperature range 30–1000°C. It was observed that the thermal expansion increased linearly with increasing temperature for all the samples.


Cite this paper
V. Venkatesh, V. Prashanth Kumar, R. Sayanna and C. Vishnuvardhan Reddy, "Preparation, Characterization and Thermal Expansion of Pr Co-Dopant in Samarium Doped Ceria," Advances in Materials Physics and Chemistry, Vol. 2 No. 4, 2012, pp. 5-8. doi: 10.4236/ampc.2012.24B002.
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